Pulled my little baby Sunfire Jr I keep under the desk, and gave it little tappy-tap, still nothing.The power light was still on, so I checked the RCA's... still nothing.

So I decided to pop the lid and see if anything was wrong.

SHIT... Looks like someone tried to cook some toast in my sub over night

And NO ONE is fixing these things right now. Bill said he can't work on them, but that Rita could fix them, (but now she's gone) and there are no schematics for it, and Sunfire won't touch them. I want my little baby back.

That sucks! Sorry to hear that. I've got a dead plate as well laying around and Bill told me the same thing. Rita really is the Master tech. She continually impressed me every time I brought something in or told her about a "problem." She always knew exactly what was wrong or what to look for on dozens of different items I brought to her. I hope she is doing well and rejoins the group soon!

Talked to Bob this morning... I'm lighting a little fire under his ass to get a copy of the schematics....He gave me the name of the company that makes the boards, They undoubtedly have them there...Let's see if I can get a copy

Yup, it blew apart I guess... It fell out when I pulled the plate amp out... If you look at the smaller burn marks on the right of the board, that is where it is located on the other side of the board. (Q-13 - Q-14)

Cool thing is, I have a 2nd Jr. here that I can figure out what resistors burned up too.

Looks like you took out a couple of resistors and a couple ofdiodes. They are not surface mounted. If the diodes leaked or shorted, it could have fried the resistors. Your only hope for that board is if none of the surface mounted components were the cause of this. Regardless, you will need the schematics for without them, this Jr. has now been reduced to a nice looking doorstop.

In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence.

The best way to enjoy digital music reproduction is to never listen to a good analogue reproduction.

Robert R. - "Did you see my North Korea analogy? I should have named it Carversite.kim"

Bill, have you tried calling Polk customer service? They can assist you with the MP1000. I used to have that sub back in the day but it has been to long for me to remember the things to look for when troubleshooting it. BTW, call. Don't e-mail.

Also, you will not have to ship the entire sub. If the issue can not be isolated and corrected over the phone, all you have to do is unscrew the plate amp and send that in. You don't have to send the entire sub. If it was purchased under an authorized Polk dealer and it is still under warranty then it won't cost you a dime to repair besides that of shipping the plate amp. If it isn't under warranty, then sign up at Club Polk and mention that you are a member of the forum to receive a discount [I think it's 5%...not sure] on your repair costs. Either way, this should help you to get it back up and running. It's too beautiful a sub to be just collecting dust.

In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence.

The best way to enjoy digital music reproduction is to never listen to a good analogue reproduction.

Robert R. - "Did you see my North Korea analogy? I should have named it Carversite.kim"